Push-in fastener

Details Push-in fastener Push-in fastener

1988-10-06

1990-02-20

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Headed fastener element

Having resilient securing structure on shank

411913, F16B 1900

Patent

active

049021826

ABSTRACT:
A one piece plastic push-in fastener for insertion into a preformed opening in a workpiece comprises an axially elongated rigid shank having a head end and a free end. A series of flexible wing members extend laterally from the shank to a radial extent greater than the cross-section of the opening. The wing members flex toward the head to permit push-in installation of the fastener in the opening. However, abutment stops are located between adjacent wing members to prevent their flexure toward the free end. Thus, the fastener has low resistance to installation and high resistance to removal.

REFERENCES:
patent: 3483787 (1964-12-01), Saunders
patent: 3494244 (1970-02-01), Wayland
patent: 3722037 (1973-03-01), Jaeger
patent: 3810279 (1974-05-01), Swick et al.
patent: 4240183 (1980-12-01), Sumimoto et al.
patent: 4381633 (1983-05-01), MacLeod
patent: 4396329 (1983-08-01), Wollar
patent: 4728238 (1988-03-01), Chisholm et al.

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